CN110176206A - Driving circuit, driving circuit link information determine method and display device - Google Patents
Driving circuit, driving circuit link information determine method and display device Download PDFInfo
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- CN110176206A CN110176206A CN201910370697.4A CN201910370697A CN110176206A CN 110176206 A CN110176206 A CN 110176206A CN 201910370697 A CN201910370697 A CN 201910370697A CN 110176206 A CN110176206 A CN 110176206A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2290/00—Indexing scheme relating to details of a display terminal
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0421—Structural details of the set of electrodes
- G09G2300/043—Compensation electrodes or other additional electrodes in matrix displays related to distortions or compensation signals, e.g. for modifying TFT threshold voltage in column driver
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0833—Several active elements per pixel in active matrix panels forming a linear amplifier or follower
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0243—Details of the generation of driving signals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0272—Details of drivers for data electrodes, the drivers communicating data to the pixels by means of a current
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0291—Details of output amplifiers or buffers arranged for use in a driving circuit
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
Abstract
This application involves a kind of driving circuit, driving circuit link informations to determine method and display device.Gamma chip in driving circuit initially ties up voltage for providing multichannel；The first kind output end output of gamma chip initially ties up the corresponding electric current of voltage less than preset driving current；The second class output end output of gamma chip initially ties up the corresponding electric current of voltage greater than preset driving current；Each endpoint of processor on the output end and data driving chip of operational amplifier in data driving chip is correspondingly connected with, and the output end of each operational amplifier is also connect with the inverting input terminal of itself；The first kind output end of the non-inverting input terminal connection gamma chip of a part of operational amplifier；Second class output end of the inverting input terminal connection gamma chip of another part operational amplifier, and the non-inverting input terminal ground connection of operational amplifier.The operational amplifier carried using data driving chip, selection, which is amplified or do not amplified, initially ties up voltage, at low cost.
Description
Technical field
It is true more particularly to a kind of driving circuit, driving circuit link information the present invention relates to display actuation techniques field
Determine method and display device.
Background technique
Here statement only provides background information related with the application, without inevitably constituting the prior art.
As liquid crystal display panel industry competition is more and more fierce, each panel factory is also increasingly stringenter the control of cost.From
(Printed Circuit Board+Assembly, PCB hollow plate is by SMT piece uploading or by the entire system of DIP plug-in unit for PCBA board
Plate after journey) design angle consideration cost declining, it is mainly concerned with assessment type selecting, the size of PCBA board, cloth for considering new chip
Line design etc..The 8bit digital signal of data driving chip becomes the simulation letter of corresponding current potential by digital analog converter conversion
Number, which is applied to liquid crystal molecule the two poles of the earth and overturns corresponding angle to control liquid crystal molecule, and the angle is by artificially
Be divided into 0~255 equal part, and then L0~L255 grayscale that corresponding panel is shown, can by control 8bit (binary digit,
Bit) digital signal come control liquid crystal display panel show picture.Usual human eye is most sensitive to the brightness of low ash rank, so in design
Gamma (gamma) is often introduced to correct so that human eye perceived brightness corresponds with the received data of liquid crystal display panel, such as Fig. 1
Shown in curve.
The voltage channel number of gamma chip output will meet data driving chip and tie up a number, and the electricity of gamma chip output
Pressure needs to reach the requirement for capableing of driving data driving chip, wherein the driving capability of the bigger needs of panel size is also bigger.
Inventor in the implementation process, it was found that: when certain gammas tie up voltage be according to gamma chip output two or more
When a gamma electric voltage carries out electric resistance partial pressure generation, by taking 14 groups are tied up voltage as an example, ties up a current potential and can satisfy for this 14 groups and tie up an electricity
Voltage levels, but when this is tied up current potential and is sent into data driving chip, it is not able to satisfy driving capability requirement but.Currently, for the problem,
Often by external controller, controller controls multiple gamma chips, is required according to driving capability, adjusts each gamma chip output
Tie up a voltage swing, such solution needs multiple control chips and multiple gamma chips, at high cost, breaks down
When, since structure is complicated, the time between overhauls(TBO) is long.
Summary of the invention
Based on this, it is necessary to for the problem at high cost of gamma correction drive scheme in traditional technology, provide a kind of driving
Circuit, driving circuit link information determine method and display device.
On the one hand, the embodiment of the invention provides a kind of driving circuits, comprising:
Gamma chip initially ties up voltage for providing multichannel；Gamma chip includes that first kind output end and the second class are defeated
Outlet, the output of first kind output end initially tie up the corresponding electric current of voltage less than preset driving current；Second class output end
Output initially ties up the corresponding electric current of voltage greater than preset driving current；
Data driving chip, data driving chip include processor and multiple operational amplifiers, each operational amplifier it is defeated
Outlet is correspondingly connected with each endpoint on processor, and the output end of each operational amplifier is also connect with the inverting input terminal of itself；
The first kind output end of the non-inverting input terminal connection gamma chip of a part of operational amplifier；Another part operational amplifier it is anti-
Phase input terminal connects the second class output end of gamma chip, and the non-inverting input terminal ground connection of operational amplifier；
Wherein, the driving current prestored is the electric current of driving capability needed for characterization driving display panel, data driving chip
Output end connect with display panel.
Driving circuit provided in an embodiment of the present invention, by utilizing the operational amplifier carried in data driving chip, so
Afterwards according to the output of gamma chip it is each initially tie up the corresponding electric current of voltage and whether can satisfy the driving capability of display panel want
It asks and (judges whether the electric current is greater than preset driving current), initially tie up an electricity for what is required it is impossible to meet driving capability
The corresponding first kind is exported the non-inverting input terminal of termination operational amplifier, enables the road initially to tie up voltage and pass through by pressure
The operational amplifier amplifies electric current, and the electric current for tying up voltage of amplified output increases, and can satisfy driving capability requirement, send
Corresponding endpoint on to processor.And initially tie up voltage for what those had been able to meet driving capability requirement, without into
Second class output end can then be connected the inverting input terminal of operational amplifier by row amplification, and by the same phase of the operational amplifier
Input terminal is drawn to ground, makes homophase input zero, so that corresponding operational amplifier does not play amplification, gamma chip is generated
Initially tying up voltage is conveyed directly to corresponding endpoint on processor.Using included operational amplifier, different are initially tied up
Point voltage uses different connection types, enables the driving respectively tied up voltage and be able to satisfy display panel for being input to processor
Force request, structure is simple, at low cost.
Operational amplifier is voltage follower in one of the embodiments,.
In driving circuit provided in an embodiment of the present invention, the operational amplifier in data driving chip is voltage follower,
Main starting voltage Following effect and Current amplifier effect, so that the new current potential for tying up voltage generated after amplification can satisfy and tie up
Point voltage level, and electric current meets the driving capability requirement of display panel.
Driving circuit in one of the embodiments, further include: one end connection first kind of first resistor, first resistor is defeated
Outlet, the other end of first resistor connect the non-inverting input terminal of corresponding operational amplifier.
Driving circuit in one of the embodiments, further include:
Second resistance, one end of second resistance connect the second class output end, and the other end of second resistance connects corresponding fortune
Calculate the inverting input terminal of amplifier；
3rd resistor, the non-inverting input terminal of one end connection operational amplifier of 3rd resistor, another termination of 3rd resistor
Ground.
First resistor is Zero-ohm resistor in one of the embodiments,.
Second resistance and 3rd resistor are Zero-ohm resistor in one of the embodiments,.
On the other hand, the embodiment of the invention also provides a kind of driving circuit link informations to determine method, wherein driving electricity
Road includes: gamma chip, initially ties up voltage for providing multichannel；Data driving chip, data driving chip include processor
With multiple operational amplifiers, each endpoint on the output end and processor of each operational amplifier is correspondingly connected with, each operational amplifier
Output end also connect with the inverting input terminal of itself；It is characterised by comprising:
Initially tie up the corresponding electric current of voltage in each road for obtaining the output of gamma chip；
Judge whether electric current is greater than the driving current prestored；
If electric current is less than the driving current prestored, the output end of the corresponding gamma chip of Cutoff current is first kind output
End, and the first link information is generated, the first kind output end of gamma chip is correspondingly connected with one for guiding by the first link information
The non-inverting input terminal of partial arithmetic amplifier；
If electric current is greater than the driving current prestored, the output end of the corresponding gamma chip of Cutoff current is the output of the second class
End, and the second link information is generated, the second class output end of gamma chip is correspondingly connected with separately by the second link information for guiding
The non-inverting input terminal of operational amplifier is grounded by the inverting input terminal of a part of operational amplifier；
Wherein, the driving current prestored is the electric current of driving capability needed for characterization driving display panel, data driving chip
Output end connect with display panel.
Driving circuit link information determines that method further comprises the steps of: in one of the embodiments,
According to the image data of the gamma chip prestored, the image data of data driving chip, the first link information and
Two link informations show that each first kind output end of gamma chip and each second class output end are corresponding with each operational amplifier respectively
The Butut of connection.
Driving circuit link information determines that method further comprises the steps of: in one of the embodiments,
The first link information and the second link information are sent to controlling terminal.
A kind of display device, including display panel and above-mentioned driving circuit.
Detailed description of the invention
Fig. 1 is the schematic diagram of an example technique Plays gamma2.2 curve；
Fig. 2 is the structural schematic diagram of driving circuit in one embodiment；
Fig. 3 is the flow diagram that driving circuit link information determines method in one embodiment；
Fig. 4 is the flow diagram that driving circuit link information determines method in another embodiment；
Fig. 5 is the structural schematic diagram of driving circuit link information determining device in one embodiment；
Fig. 6 is the structural schematic diagram of driving circuit link information determining device in another embodiment；
Fig. 7 is the structural schematic diagram of display device in one embodiment；
Fig. 8 is the internal structure chart of computer equipment in one embodiment.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to the disclosure.
It should be noted that it can be directly to separately when an element is considered as " connection " another element
One element and it is in combination be integrated, or may be simultaneously present centering elements.Term as used herein " installation ", " one
End ", " other end " and similar statement are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
The big multi-vendor gamma chip (gamma IC, gamma Integrated Circuit) used, which is tied up, at present is a little mostly
14 or 16, it is divided into two groups by positive and negative polarity.It is more to tie up a number, gamma γ=2.2 shown in Fig. 1
Curve (standard gamma2.2 curve), but the corresponding gamma that adjusts also becomes more difficult, generally uses 14 or 16 at present
A tie up can a little make gamma close to standard gamma2.2 curve.There are some data driving chips to carry operation amplifier at present
Device function.
The technical issues of based on proposed in above-mentioned technology and background technique, the embodiment of the invention provides a kind of driving electricity
Road, as shown in Figure 2, comprising: gamma chip 10 initially ties up voltage for providing multichannel；Gamma chip 10 includes that the first kind is defeated
The corresponding electric current of voltage of initially tying up of outlet and the second class output end, the output of first kind output end is less than preset driving electricity
Stream；The output of second class output end initially ties up the corresponding electric current of voltage greater than preset driving current；Data driving chip 20,
Data driving chip 20 includes processor 21 and multiple operational amplifiers 22, the output end and processor 21 of each operational amplifier 22
On each endpoint be correspondingly connected with, the output end of each operational amplifier 22 is also connect with the inverting input terminal of itself；A part of operation
The first kind output end of the non-inverting input terminal connection gamma circuit 10 of amplifier 22；The reverse phase of another part operational amplifier 22 is defeated
Enter the second class output end of end connection gamma circuit 10, and the non-inverting input terminal ground connection of the operational amplifier 22；Wherein, it prestores
Driving current is the electric current of driving capability needed for characterization driving display panel, the output end and display panel of data driving chip 20
Connection.
Wherein, gamma chip 10 is to refer to export multiple gamma electric voltages, to the corrected device of data drive signal
Part.Be not limited to only include CPU in gamma chip 10, can also including divider resistance etc. elements.Using above-mentioned connection, for first
The case where beginning ties up the corresponding electric current of voltage less than preset driving current, connect the gamma chip 10 first kind output end and
The non-inverting input terminal of operational amplifier 22 initially ties up voltage through the non-inverting input terminal of operational amplifier 22 and is delivered to operation amplifier
Device 22, it is amplified, it is exported by the output end of operational amplifier 22 to corresponding endpoint on processor 21, operational amplifier 22
Inverting input terminal is connect with its output end, forms negative-feedback.For example, as shown in Fig. 2, G13 output end for gamma chip 10
Output initially ties up the corresponding electric current of voltage less than preset driving current, puts so needing initially to tie up this voltage
Greatly, the voltage of initially tying up of G13 output end output is inputted from the non-inverting input terminal of operational amplifier 22, and operational amplifier 22 is in
Magnifying state, the new voltage driving capability of tying up generated after amplification is amplified, and is delivered on processor 21 by output end
G13 ' endpoint.It should be noted that avoid each voltage of initially tying up from influencing each other when amplifying through operational amplifier 22, respectively
It initially ties up and is corresponded between voltage and each operational amplifier 22.
Similarly, when initially tying up the corresponding electric current of voltage greater than preset driving current, connection operational amplifier 22
Second class output end of inverting input terminal and gamma chip 10, and the non-inverting input terminal of the operational amplifier 22 is grounded, due to
The non-inverting input terminal of the operational amplifier 22 is grounded, which is zero, and due to the output of the operational amplifier 22
End is connect with its inverting input terminal, is exported so initially tying up reversed-phase output of the voltage directly through operational amplifier 22 to processing
Corresponding endpoint on device 21.For example, as shown in Fig. 2, the G14 output end of gamma chip 10 export initially to tie up voltage corresponding
Electric current is greater than preset driving current, then the G14 output end is connect with the input terminal of the second class output end, the second class output end
Output end connects the reversed-phase output of operational amplifier 22, the non-inverting input terminal ground connection of the operational amplifier 22, non-inverting input terminal
No input signal influences, i.e., this is directly initially tied up to the G14 ' endpoint that voltage is sent on processor 21.
Driving circuit provided in an embodiment of the present invention, by utilizing the operational amplifier carried in data driving chip 20
22, then initially tie up whether the corresponding electric current of voltage can satisfy the driving of display panel according to each of the output of gamma chip 10
Capability Requirement (judges whether the electric current is greater than preset driving current), for it is impossible to meet driving capability require it is initial
Voltage is tied up, the homophase input that voltage corresponding first kind output end and corresponding operational amplifier 22 is initially tied up on the road is established
Correspondence between end enables the road initially to tie up voltage and amplifies electric current by the operational amplifier 22, amplified
The electric current for tying up voltage of output increases, and can satisfy driving capability requirement, is sent to corresponding endpoint on processor 21.And for
What those had been able to meet driving capability requirement initially ties up voltage, without amplifying, then this can initially be tied up an electricity
Corresponding second class output end is pressed to connect the inverting input terminal of corresponding operational amplifier 22, inverted input terminal is directly transferred to locate
Device 21 (in-phase end ground connection, input zero) is managed, by this connection, so that corresponding operational amplifier 22 does not play amplification,
It initially ties up voltage by what gamma chip 10 generated and is conveyed directly to corresponding endpoint on processor 21.It is put using included operation
Big device 22 initially ties up voltage using different connection types to different, so that be input to processor 21 respectively ties up voltage
It is able to satisfy the driving capability requirement of display panel, structure is simple, at low cost.
In one of the embodiments, as shown in Fig. 2, operational amplifier 22 is voltage follower.Voltage follower is real
Existing output voltage follows a kind of electronic component of input voltage, and the distinguishing feature of voltage follower is exactly that input impedance is high, and defeated
Impedance is low out.In general, input impedance can achieve several megohms, and output impedance is low, and usually only several ohm, even more
Low, the voltage amplification factor perseverance of described justice voltage follower is less than and close to 1, and the electric current of output signal may be implemented to amplify.
Operational amplifier 22 in the embodiment of the present invention in data driving chip 20 uses voltage follower, for the of gamma chip 10
A kind of output end output initially ties up voltage, after corresponding voltage follower, the current potential base for tying up voltage of output
This is constant, and electric current is amplified, i.e., driving capability is amplified, and meets the driving capability requirement of display panel.
In driving circuit provided in an embodiment of the present invention, the operational amplifier 22 in data driving chip 20 is voltage follow
Device, main starting voltage Following effect and Current amplifier effect, enable the new current potential for tying up voltage generated after amplifying to expire
Foot ties up a voltage level, and electric current meets the driving capability requirement of display panel.
In one of the embodiments, as shown in Fig. 2, driving circuit further include: first resistor R1, the one of first resistor R1
The first kind output end of end connection gamma chip 10, the other end of first resistor R1 connect the same phase of corresponding operational amplifier 22
Input terminal.
In one of the embodiments, as shown in Fig. 2, driving circuit further include: second resistance R2, the one of second resistance R2
Second class output end of end connection gamma chip 10, the other end of second resistance R2 connect the reverse phase of corresponding operational amplifier 22
Input terminal；The non-inverting input terminal of one end connection operational amplifier 22 of 3rd resistor R3,3rd resistor R3,3rd resistor R3's is another
One end ground connection.Beneficial effect can be found in pushing in above-described embodiment.
In one of the embodiments, as shown in Fig. 2, first resistor R1 is Zero-ohm resistor.Zero-ohm resistor is also known as
Resistor is bridged, is a kind of resistance of specific use, the not real resistance value of 0 Ohmic resistance is zero, and Ohmic resistance is really
The resistance of resistance value very little, using Zero-ohm resistor, may make the output of first kind output end initially ties up voltage through zero Europe
After nurse resistance, current driving ability size is almost unchanged, it is ensured that is inputted to operational amplifier 22 ties up a voltage driving
Capacity loss is minimum.
In one of the embodiments, as shown in Fig. 2, second resistance R2 and 3rd resistor R3 are Zero-ohm resistor.Together
On, using Zero-ohm resistor, it is ensured that be minimized to a voltage signal loss is tied up.And by the same phase of operational amplifier 22
Input terminal is grounded using the 3rd resistor R3 of zero ohms, can make each 22 single-point grounding of operational amplifier, is respectively become solely
Erection system, strong antijamming capability.
On the other hand, the embodiment of the invention also provides a kind of driving circuit link informations to determine method, wherein driving electricity
Road includes: gamma chip 10, initially ties up voltage for providing multichannel；Data driving chip 20, data driving chip 20 include
Processor 21 and multiple operational amplifiers 22, the output end of each operational amplifier 22 is corresponding with each endpoint on processor 21 to be connected
It connects, the output end of each operational amplifier 22 is also connect with the inverting input terminal of itself；
As shown in figure 3, driving circuit link information determines that method includes:
S10: the corresponding electric current of voltage is initially tied up in each road for obtaining the output of gamma chip；
S20: judge whether electric current is greater than the driving current prestored；
S30: if electric current is less than the driving current prestored, the output end of the corresponding gamma chip of Cutoff current is the first kind
Output end, and the first link information is generated, the first link information is used to guide the corresponding company of the first kind output end of gamma chip
Connect the non-inverting input terminal of a part of operational amplifier；
S40: if electric current is greater than the driving current prestored, the output end of the corresponding gamma chip of Cutoff current is the second class
Output end, and the second link information is generated, the second link information is used to guide the corresponding company of the second class output end of gamma chip
The non-inverting input terminal of the operational amplifier is grounded by the inverting input terminal for connecing another part operational amplifier；
Wherein, the driving current prestored is the electric current of driving capability needed for characterization driving display panel, data driving chip
Output end connect with display panel.
Wherein, the paraphrase such as gamma chip are same with the above-mentioned embodiment, and this will not be repeated here.For existing gamma chip
And data driving chip, the connection of the two how is carried out, so that between the gamma electric voltage that data driving chip receives and grayscale
Relationship can approach or 2.2 curve of infinite approach gamma.Specifically, first obtaining each of gamma chip output initially ties up an electricity
Press corresponding electric current, size relation of the judgement per electric current all the way and the driving current prestored, if the electric current is less than preset driving
Electric current illustrates that the driving capability requirement that voltage is not able to satisfy display panel is initially tied up on that corresponding road of the electric current, determines gamma
Such output end of chip is first kind output end, and generates the first link information, and the first link information is for guiding gal
The first kind output end of horse chip is connected with the non-inverting input terminal of operational amplifier, effect be so that connection after, gamma chip
The initial voltage of tying up of first kind output end output can export after corresponding operational amplifier amplifies electric current to processor
Upper corresponding endpoint.And for initially tying up the case where corresponding electric current of voltage is greater than preset driving current, at the beginning of illustrating the road
Beginning ties up voltage and has been able to the driving capability requirement for meeting display panel, then determines that such output end of gamma chip is second
Class output end, and generate the second link information, the second link information be for guides by the second class output end of gamma chip with
The inverting input terminal of its corresponding operational amplifier connects, and the non-inverting input terminal of the operational amplifier is grounded, i.e., with mutually defeated
Entering end input is zero, and the directly inverted input terminal of voltage of initially tying up of the second class output end output is exported to corresponding on processor
Endpoint.Using the operational amplifier carried in data driving chip, by simple circuit connection, realize that operational amplifier is put
Whether the selection of big function or not, so that output ties up voltage to endpoint each on processor (G1 '~G14 ') and can satisfy display
The driving capability requirement of panel, structure is simple, at low cost.
In one of the embodiments, as shown in figure 4, driving circuit link information determines that method further comprises the steps of:
S50: according to the image data of the gamma chip prestored, the image data of data driving chip, first connection
Information and second link information, show the gamma chip each first kind output end and each second class output end respectively with
The Butut that each operational amplifier is correspondingly connected with.
Above-mentioned image data may each refer to the characteristic parameter etc. for being able to reflect real-world object image.For subsequent sample or
In production, it often may require that progress manual work or machinery operation can be according to the gamma chips prestored for convenience of subsequent job
Image data, the image data of data driving chip show the image of gamma chip image and data driving chip, then basis
The coordinate of each output end in the image data of gamma chip, in data driving chip each port coordinate of processor and first,
Second connection scheme generates the wiring between the first, second class output end of each gamma chip and each operational amplifier, then gives birth to
At the total architecture diagram of driving circuit, to guide worker to carry out operation according to the Butut of display.
In one of the embodiments, as shown in figure 4, driving circuit link information determines that method further comprises the steps of:
S60: the first link information and the second link information are sent to controlling terminal.
Wherein, controlling terminal includes PC (personal computer, personal computer), controller etc..For example, in life
It produces in workshop, the controller in industrial robot receives the first link information and the second link information.Controlling terminal can also be
PC sends first link information and the second link information to the PC, which can will receive after receiving link information
Link information and the parameter (number, the coordinate of each pin on station etc.) of corresponding gamma chip, data driving chip
Corresponding storage, is on the one hand conducive to provide modification basis when later period maintenance, on the other hand, can be with the based on the received first connection letter
The parameter of the parameter and data driving chip of breath and the second link information and the gamma chip of storage, generates manufacturing side
Case, to indicate that executing agency carries out production operation.
It should be understood that although each step in the flow chart of Fig. 3-4 is successively shown according to the instruction of arrow,
These steps are not that the inevitable sequence according to arrow instruction successively executes.Unless expressly stating otherwise herein, these steps
Execution there is no stringent sequences to limit, these steps can execute in other order.Moreover, at least one in Fig. 3-4
Part steps may include that perhaps these sub-steps of multiple stages or stage are not necessarily in synchronization to multiple sub-steps
Completion is executed, but can be executed at different times, the execution sequence in these sub-steps or stage is also not necessarily successively
It carries out, but can be at least part of the sub-step or stage of other steps or other steps in turn or alternately
It executes.
The embodiment of the invention also provides a kind of driving circuit link information determining devices, as shown in Figure 5, comprising:
The corresponding electric current of voltage is initially tied up on electric current acquiring unit 101, each road for obtaining the output of gamma chip；
Driving capability judging unit 102, for judging whether electric current is greater than the driving current prestored；
First link information generation unit 103, for when electric current is less than the driving current prestored, then Cutoff current to be corresponding
The output end of gamma chip be first kind output end, and generate the first link information, the first link information is for guiding gal
The first kind output end of horse chip is correspondingly connected with the non-inverting input terminal of a part of operational amplifier；
Second link information generation unit 104, for when electric current is greater than the driving current prestored, then Cutoff current to be corresponding
The output end of gamma chip be the second class output end, and generate the second link information, the second link information is for guiding gal
Second class output end of horse chip is correspondingly connected with the inverting input terminal of another part operational amplifier, by the same phase of operational amplifier
Input end grounding；
Wherein, the driving current prestored is the electric current of driving capability needed for characterization driving display panel, data driving chip
Output end connect with display panel.
In one of the embodiments, as shown in fig. 6, driving circuit link information determining device, further includes:
Butut display control unit 105, for the figure according to the image data of the gamma chip that prestores, data driving chip
As data, the first link information and the second link information, each first kind output end and the output of each second class of gamma chip are shown
Hold the Butut being correspondingly connected with respectively with each operational amplifier.
In one of the embodiments, as shown in fig. 6, driving circuit link information determining device, further includes:
Link information transmission unit 106, for sending the first link information and the second link information to controlling terminal.
Wherein, it may refer to about the specific restriction of driving circuit link information determining device above for driving circuit
Link information determines the restriction of method, and details are not described herein.And the beneficial effect of above-mentioned driving circuit link information determining device
Also reference can be made to description in above method embodiment.Modules in above-mentioned driving circuit link information determining device can be whole
Or part is realized by software, hardware and combinations thereof.Above-mentioned each module can be embedded in the form of hardware or independently of computer
In processor in equipment, it can also be stored in a software form in the memory in computer equipment, in order to processor tune
With the corresponding operation of the above modules of execution.
A kind of display device, as shown in fig. 7, comprises display panel 1 and above-mentioned driving circuit 2.Driving circuit 2 provides satisfaction
What driving 1 driving capability of display panel required ties up voltage, send through subsequent processing to display panel 1, carries out display driving.Its
In, display panel 1 can be liquid crystal display panel or OLED (Organic Light-Emitting Diode, organic light emission two
Pole pipe) display panel etc..Display panel 1 may include array substrate 12 and colored filter 11.It is provided in an embodiment of the present invention
Display device, the OP22 (OperationalAmplifier, operational amplifier) carried using data driving chip 20, to driving
Scarce capacity is initially tied up voltage and is amplified, the amplified new processing tying up voltage and being sent into data driving chip 20
Device 21 carries out gamma correction to data-signal, and to drive display panel 1 to be shown, display quality is good.It should be noted that
Data driving chip can be multiple, and what the operational amplifier 22 in each data driving chip 20 was exported new ties up voltage
The processor 21 being transported in each data driving chip 20, so that the processor final output of each data driving chip 20
It ties up a number of voltages and meets driving requirement.
In one embodiment, a kind of computer equipment is provided, which can be terminal, internal structure
Figure can be as shown in Figure 8.The computer equipment includes processor, the memory, network interface, display connected by system bus
Screen and input unit.Wherein, the processor of the computer equipment is for providing calculating and control ability.The computer equipment is deposited
Reservoir includes non-volatile memory medium, built-in storage.The non-volatile memory medium is stored with operating system and computer journey
Sequence.The built-in storage provides environment for the operation of operating system and computer program in non-volatile memory medium.The calculating
The network interface of machine equipment is used to communicate with external terminal by network connection.When the computer program is executed by processor with
Realize that a kind of driving circuit link information determines method.The display screen of the computer equipment can be liquid crystal display or electronics
Ink display screen, the input unit of the computer equipment can be the touch layer covered on display screen, are also possible to computer and set
Key, trace ball or the Trackpad being arranged on standby shell, can also be external keyboard, Trackpad or mouse etc..
It will be understood by those skilled in the art that structure shown in Fig. 8, only part relevant to application scheme is tied
The block diagram of structure does not constitute the restriction for the computer equipment being applied thereon to application scheme, specific computer equipment
It may include perhaps combining certain components or with different component layouts than more or fewer components as shown in the figure.
A kind of computer equipment, including memory and processor, memory are stored with computer program, and processor executes meter
It is performed the steps of when calculation machine program
S10: the corresponding electric current of voltage is initially tied up in each road for obtaining the output of gamma chip；
S20: judge whether electric current is greater than the driving current prestored；
S30: if electric current is less than the driving current prestored, the output end of the corresponding gamma chip of Cutoff current is the first kind
Output end, and the first link information is generated, the first link information is used to guide the corresponding company of the first kind output end of gamma chip
Connect the non-inverting input terminal of a part of operational amplifier；
S40: if electric current is greater than the driving current prestored, the output end of the corresponding gamma chip of Cutoff current is the second class
Output end, and the second link information is generated, the second link information is used to guide the corresponding company of the second class output end of gamma chip
The non-inverting input terminal of the operational amplifier is grounded by the inverting input terminal for connecing another part operational amplifier；
Wherein, the driving current prestored is the electric current of driving capability needed for characterization driving display panel, data driving chip
Output end connect with display panel.
Using computer equipment provided in an embodiment of the present invention, what can be exported according to gamma chip initially ties up voltage, sentences
Whether the corresponding electric current that breaks meets driving capability requirement, generates the first link information, those are unsatisfactory for driving capability and wanted by guide
The non-inverting input terminal for the first kind output termination operational amplifier asked, realizes the enlarging function investment of operational amplifier.If judgement
When corresponding electric current is unsatisfactory for driving capability requirement, the second link information is generated, is guided the second class output end of gamma chip
It is connect with the inverting input terminal of operational amplifier, and since the non-inverting input terminal of the operational amplifier is grounded, so, operation amplifier
The enlarging function of device is not put into, the output of the second class output end of gamma chip initially tying up voltage directly passes through operational amplifier
Inverting input terminal export corresponding endpoint on the processor to data driving chip.
It should be noted that the processor of computer equipment provided in an embodiment of the present invention can also realize above-mentioned driving electricity
Road link information determines other steps in method.
A kind of computer readable storage medium is stored thereon with computer program, when computer program is executed by processor
It performs the steps of
S10: the corresponding electric current of voltage is initially tied up in each road for obtaining the output of gamma chip；
S20: judge whether electric current is greater than the driving current prestored；
S30: if electric current is less than the driving current prestored, the output end of the corresponding gamma chip of Cutoff current is the first kind
Output end, and the first link information is generated, the first link information is used to guide the corresponding company of the first kind output end of gamma chip
Connect the non-inverting input terminal of a part of operational amplifier；
S40: if electric current is greater than the driving current prestored, the output end of the corresponding gamma chip of Cutoff current is the second class
Output end, and the second link information is generated, the second link information is used to guide the corresponding company of the second class output end of gamma chip
The non-inverting input terminal of the operational amplifier is grounded by the inverting input terminal for connecing another part operational amplifier；
Wherein, the driving current prestored is the electric current of driving capability needed for characterization driving display panel, data driving chip
Output end connect with display panel.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the computer program can be stored in a non-volatile computer
In read/write memory medium, the computer program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein,
To any reference of memory, storage, database or other media used in each embodiment provided herein,
Including non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), programming ROM
(PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include
Random access memory (RAM) or external cache.By way of illustration and not limitation, RAM is available in many forms,
Such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDRSDRAM), enhancing
Type SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM
(RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM) etc..
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of driving circuit characterized by comprising
Gamma chip initially ties up voltage for providing multichannel；The gamma chip includes that first kind output end and the second class are defeated
Outlet, the first kind output end output initially tie up the corresponding electric current of voltage less than preset driving current；Described second
The output of class output end initially ties up the corresponding electric current of voltage greater than the preset driving current；
Data driving chip, the data driving chip include processor and multiple operational amplifiers, each operational amplifier
Output end be correspondingly connected with each endpoint on the processor, the output end of each operational amplifier also with the reverse phase of itself
Input terminal connection；The non-inverting input terminal of a part of operational amplifier connects the first kind output end of the gamma circuit；Separately
The inverting input terminal of a part of operational amplifier connects the second class output end of the gamma circuit, and the operation amplifier
The non-inverting input terminal of device is grounded；
Wherein, the driving current prestored is the electric current of driving capability needed for characterization driving display panel, the data-driven
The output end of chip is connect with the display panel.
2. driving circuit according to claim 1, which is characterized in that the operational amplifier is voltage follower.
3. driving circuit according to claim 2, which is characterized in that further include:
First resistor, one end of the first resistor connect the first kind output end of the gamma chip, the first resistor
The other end connects the non-inverting input terminal of corresponding operational amplifier.
4. driving circuit according to claim 2 or 3, which is characterized in that further include:
Second resistance, one end of the second resistance connect the second class output end of the gamma chip, the second resistance
The other end connects the inverting input terminal of corresponding operational amplifier；
3rd resistor, one end of the 3rd resistor connect the non-inverting input terminal of the operational amplifier, the 3rd resistor
Other end ground connection.
5. driving circuit according to claim 3, which is characterized in that the first resistor is Zero-ohm resistor.
6. driving circuit according to claim 4, which is characterized in that the second resistance and the 3rd resistor are zero
Ohmic resistance.
7. a kind of driving circuit link information determines method, wherein driving circuit includes: gamma chip, at the beginning of providing multichannel
Beginning ties up voltage；Data driving chip, the data driving chip include processor and multiple operational amplifiers, each operation
The output end of amplifier is correspondingly connected with each endpoint on the processor, the output end of each operational amplifier also with itself
Inverting input terminal connection；It is characterised by comprising:
Initially tie up the corresponding electric current of voltage in each road for obtaining the gamma chip output；
Judge whether the electric current is greater than the driving current prestored；
If the electric current is less than the driving current prestored, determine that the output end of the corresponding gamma chip of the electric current is the
A kind of output end, and the first link information is generated, first link information is for guiding the first kind of the gamma chip
Output end is correspondingly connected with the non-inverting input terminal of a part of operational amplifier；
If the electric current is greater than the driving current prestored, determine that the output end of the corresponding gamma chip of the electric current is the
Two class output ends, and the second link information is generated, second link information is for guiding the second class of the gamma chip
Output end is correspondingly connected with the inverting input terminal of operational amplifier described in another part, by the non-inverting input terminal of the operational amplifier
Ground connection；
Wherein, the driving current prestored is the electric current of driving capability needed for characterization driving display panel, the data-driven
The output end of chip is connect with the display panel.
8. driving circuit link information according to claim 7 determines method, which is characterized in that further comprise the steps of:
According to the image data of the gamma chip prestored, the image data of data driving chip, first link information and institute
State the second link information, the connection Butut of display driver circuit.
9. driving circuit link information according to claim 7 or 8 determines method, which is characterized in that further comprise the steps of:
First link information and second link information are sent to controlling terminal.
10. a kind of display device, which is characterized in that including display panel and driving of any of claims 1-6 electricity
Road.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910370697.4A CN110176206B (en) | 2019-05-06 | 2019-05-06 | Drive circuit, drive circuit connection information determination method, and display device |
| US17/298,217 US11488504B2 (en) | 2019-05-06 | 2020-05-06 | Driving circuit, method for determining connection information of driving circuit and display device |
| PCT/CN2020/088752 WO2020224587A1 (en) | 2019-05-06 | 2020-05-06 | Drive circuit, method for determining connection information of drive circuit and display device |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201910370697.4A CN110176206B (en) | 2019-05-06 | 2019-05-06 | Drive circuit, drive circuit connection information determination method, and display device |
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| CN110176206A true CN110176206A (en) | 2019-08-27 |
| CN110176206B CN110176206B (en) | 2021-06-18 |
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| US (1) | US11488504B2 (en) |
| CN (1) | CN110176206B (en) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020224587A1 (en) * | 2019-05-06 | 2020-11-12 | 重庆惠科金渝光电科技有限公司 | Drive circuit, method for determining connection information of drive circuit and display device |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100604915B1 (en) * | 2004-10-28 | 2006-07-28 | 삼성전자주식회사 | Driving method and source driver for flat panel display using interpolation amplifier scheme |
| US20080165165A1 (en) * | 2007-01-09 | 2008-07-10 | Himax Technologies Limited | Driver Circuit of AMOLED with Gamma Correction |
| US20080259013A1 (en) * | 2007-04-19 | 2008-10-23 | Seiko Epson Corporation | Gamma correction circuit |
| KR20090054754A (en) * | 2007-11-27 | 2009-06-01 | 시트로닉스 테크놀로지 코퍼레이션 | Low power source driving device |
| CN101847378A (en) * | 2009-03-27 | 2010-09-29 | 北京京东方光电科技有限公司 | Source driving chip |
| US7928954B1 (en) * | 2007-07-11 | 2011-04-19 | Novatek Microelectronics Corp. | Source driver with charge sharing |
| CN105096784A (en) * | 2015-08-07 | 2015-11-25 | 京东方科技集团股份有限公司 | Detection circuit and detection method, display panel and control method and display device |
| CN106548760A (en) * | 2017-01-16 | 2017-03-29 | 京东方科技集团股份有限公司 | A kind of gamma voltage generation circuit and control method, source electrode driver |
| CN107492358A (en) * | 2017-09-14 | 2017-12-19 | 京东方科技集团股份有限公司 | A kind of generation circuit and its production method of Gamma reference voltages |
| CN109256104A (en) * | 2018-11-22 | 2019-01-22 | 惠科股份有限公司 | Display device, display panel voltage source system and its circuit |
| CN208607896U (en) * | 2018-07-03 | 2019-03-15 | 上海视涯信息科技有限公司 | Gamma voltage generation circuit, driving circuit and its display device |
| CN109509449A (en) * | 2018-12-19 | 2019-03-22 | 惠科股份有限公司 | Current regulating circuit, driving circuit and display device |
| CN109559696A (en) * | 2018-12-24 | 2019-04-02 | 惠科股份有限公司 | Display module and its gamma electric voltage adjusting method and display device |
| CN109671406A (en) * | 2019-01-09 | 2019-04-23 | 惠科股份有限公司 | Gamma chip, display panel, drive circuit and display device |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100918698B1 (en) * | 2007-11-20 | 2009-09-22 | 주식회사 실리콘웍스 | Offset compensation gamma buffer and gray scale voltage generation circuit using the same |
| CN103310752B (en) * | 2013-06-05 | 2015-07-22 | 合肥京东方光电科技有限公司 | Gamma voltage adjusting method and gamma voltage adjusting system |
| US8884677B1 (en) * | 2013-11-18 | 2014-11-11 | Himax Technologies Limited | Gamma operational amplifier circuit, source driver and method for eliminating voltage offset |
| KR102130142B1 (en) * | 2013-12-31 | 2020-07-06 | 엘지디스플레이 주식회사 | Curcuit for Generating Gamma Voltage and Display Panel having the Same |
| US20150187300A1 (en) * | 2013-12-31 | 2015-07-02 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Driving circuit of lcd panel, the lcd panel, and lcd device |
| US9275600B2 (en) * | 2014-03-25 | 2016-03-01 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Source electrode driving module with Gamma correction and LCD panel |
| CN104036742B (en) * | 2014-05-26 | 2016-07-20 | 京东方科技集团股份有限公司 | Gamma reference voltage generation circuit, V-T curve method of testing and display device |
| CN104240665A (en) * | 2014-09-16 | 2014-12-24 | 深圳市华星光电技术有限公司 | Source electrode drive circuit and display device |
| CN106057141A (en) * | 2016-05-04 | 2016-10-26 | 深圳市华星光电技术有限公司 | Gamma reference voltage generation circuit and display |
| KR102576541B1 (en) * | 2016-10-13 | 2023-09-11 | 엘지디스플레이 주식회사 | Touch display device and method for driving the same, driving circuit, data driving circuit, and gate driving circuit |
| KR102642577B1 (en) * | 2016-12-12 | 2024-02-29 | 엘지디스플레이 주식회사 | Driver Integrated Circuit For External Compensation And Display Device Including The Same And Data Calibration Method of The Display Device |
| CN108847184B (en) * | 2018-07-09 | 2020-03-31 | 京东方科技集团股份有限公司 | Gamma voltage compensation circuit and compensation method, source driver and display panel |
| CN108986731B (en) * | 2018-08-07 | 2021-10-08 | 京东方科技集团股份有限公司 | Display panel, compensation method thereof and display device |
| CN109616067B (en) * | 2019-01-02 | 2020-09-01 | 合肥京东方显示技术有限公司 | Voltage compensation circuit and method thereof, display driving circuit and display device |
| CN109584781B (en) * | 2019-02-14 | 2021-11-23 | 合肥奕斯伟集成电路有限公司 | Gamma operational amplifier and driving circuit |
| CN109658896B (en) * | 2019-02-25 | 2021-03-02 | 京东方科技集团股份有限公司 | Gamma voltage generation circuit, driving circuit and display device |
| CN109979365B (en) * | 2019-03-22 | 2021-08-06 | 惠科股份有限公司 | Debugging method, driving method of display device and display device |
| CN110176206B (en) * | 2019-05-06 | 2021-06-18 | 重庆惠科金渝光电科技有限公司 | Drive circuit, drive circuit connection information determination method, and display device |
| CN110223654B (en) * | 2019-06-10 | 2020-11-03 | 惠科股份有限公司 | Drive module and display device |
| KR20210006614A (en) * | 2019-07-09 | 2021-01-19 | 삼성전자주식회사 | Source driver and display device including thereof |
| US10878738B1 (en) * | 2019-07-30 | 2020-12-29 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display product and drive chip for driving display panel |
-
2019
- 2019-05-06 CN CN201910370697.4A patent/CN110176206B/en active Active
-
2020
- 2020-05-06 WO PCT/CN2020/088752 patent/WO2020224587A1/en active Application Filing
- 2020-05-06 US US17/298,217 patent/US11488504B2/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100604915B1 (en) * | 2004-10-28 | 2006-07-28 | 삼성전자주식회사 | Driving method and source driver for flat panel display using interpolation amplifier scheme |
| US20080165165A1 (en) * | 2007-01-09 | 2008-07-10 | Himax Technologies Limited | Driver Circuit of AMOLED with Gamma Correction |
| US20080259013A1 (en) * | 2007-04-19 | 2008-10-23 | Seiko Epson Corporation | Gamma correction circuit |
| US7928954B1 (en) * | 2007-07-11 | 2011-04-19 | Novatek Microelectronics Corp. | Source driver with charge sharing |
| KR20090054754A (en) * | 2007-11-27 | 2009-06-01 | 시트로닉스 테크놀로지 코퍼레이션 | Low power source driving device |
| CN101847378A (en) * | 2009-03-27 | 2010-09-29 | 北京京东方光电科技有限公司 | Source driving chip |
| CN105096784A (en) * | 2015-08-07 | 2015-11-25 | 京东方科技集团股份有限公司 | Detection circuit and detection method, display panel and control method and display device |
| CN106548760A (en) * | 2017-01-16 | 2017-03-29 | 京东方科技集团股份有限公司 | A kind of gamma voltage generation circuit and control method, source electrode driver |
| CN107492358A (en) * | 2017-09-14 | 2017-12-19 | 京东方科技集团股份有限公司 | A kind of generation circuit and its production method of Gamma reference voltages |
| CN208607896U (en) * | 2018-07-03 | 2019-03-15 | 上海视涯信息科技有限公司 | Gamma voltage generation circuit, driving circuit and its display device |
| CN109256104A (en) * | 2018-11-22 | 2019-01-22 | 惠科股份有限公司 | Display device, display panel voltage source system and its circuit |
| CN109509449A (en) * | 2018-12-19 | 2019-03-22 | 惠科股份有限公司 | Current regulating circuit, driving circuit and display device |
| CN109559696A (en) * | 2018-12-24 | 2019-04-02 | 惠科股份有限公司 | Display module and its gamma electric voltage adjusting method and display device |
| CN109671406A (en) * | 2019-01-09 | 2019-04-23 | 惠科股份有限公司 | Gamma chip, display panel, drive circuit and display device |
Non-Patent Citations (3)
| Title |
|---|
| SANG-HEE SONG: "A Study on the Design of Amplifier for Source Driver IC applicable to the large TFT-LCD TV", 《JOURNAL OF IKEEE》 * |
| 张庚宇: "用于TFT-LCD集成芯片的低功耗多级运算放大器研究", 《中国博士学位论文全文数据库信息科技辑》 * |
| 陈文明: "大屏幕TFT-LCD驱动电路设计", 《光电技术应用》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020224587A1 (en) * | 2019-05-06 | 2020-11-12 | 重庆惠科金渝光电科技有限公司 | Drive circuit, method for determining connection information of drive circuit and display device |
| US11488504B2 (en) | 2019-05-06 | 2022-11-01 | Chongqing Hkc Optoelectronics Technology Co., Ltd. | Driving circuit, method for determining connection information of driving circuit and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| US11488504B2 (en) | 2022-11-01 |
| CN110176206B (en) | 2021-06-18 |
| US20220093021A1 (en) | 2022-03-24 |
| WO2020224587A1 (en) | 2020-11-12 |
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